WO2011102818A1 - Insertion d'un logo stéréophtographique - Google Patents

Insertion d'un logo stéréophtographique Download PDF

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Publication number
WO2011102818A1
WO2011102818A1 PCT/US2010/000480 US2010000480W WO2011102818A1 WO 2011102818 A1 WO2011102818 A1 WO 2011102818A1 US 2010000480 W US2010000480 W US 2010000480W WO 2011102818 A1 WO2011102818 A1 WO 2011102818A1
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WO
WIPO (PCT)
Prior art keywords
logo
stereo
format
spatially interleaved
image
Prior art date
Application number
PCT/US2010/000480
Other languages
English (en)
Other versions
WO2011102818A9 (fr
Inventor
Jill Macdonald Boyce
Kumar Ramaswamy
Joan Llach
Original Assignee
Thomson Licensing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Priority to EP10709087.0A priority Critical patent/EP2537346B1/fr
Priority to PCT/US2010/000480 priority patent/WO2011102818A1/fr
Priority to JP2012553856A priority patent/JP5873813B2/ja
Priority to CN2010800662986A priority patent/CN102860014A/zh
Priority to US13/579,670 priority patent/US9860513B2/en
Priority to KR1020127024354A priority patent/KR20120131185A/ko
Publication of WO2011102818A1 publication Critical patent/WO2011102818A1/fr
Publication of WO2011102818A9 publication Critical patent/WO2011102818A9/fr
Priority to US15/860,655 priority patent/US10560681B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/156—Mixing image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/172—Processing image signals image signals comprising non-image signal components, e.g. headers or format information
    • H04N13/183—On-screen display [OSD] information, e.g. subtitles or menus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/293—Generating mixed stereoscopic images; Generating mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background

Definitions

  • This invention relates to image processing and display systems, and more particularly, to a system and method for inserting an object such as a logo into video content and, more particularly, for inserting a logo onto stereo spatially interleaved three dimensional (3D) pictures.
  • logo insertion devices and techniques are widely available for commercial and non-commercial applications dealing exclusively with two dimensional (2D) images and video.
  • the source picture and a logo picture are input to a device which combines the inputs to form an output 2D picture.
  • This output 2D picture includes the logo overlaid or blended with the source picture.
  • Transparency, size, color, and position of the logo are generally parameters capable of being programmed to effect a change in the appearance of the logo in the output picture.
  • logo insertion for 2D images is known to be performed on uncompressed video or on video in the compressed domain. In both cases, the logo insertion is typically accomplished without requiring decoding and re-encoding the image bit stream.
  • the Thomson Grass Valley Crystal Logo Inserter performs still and animated logo insertion directly in the MPEG-2 compressed video domain, thereby avoiding any decoding and re-encoding of the 2D signals.
  • Other logo insertion products are commercially available for inserting a logo into a 2D image.
  • the logo picture is combined directly with the content picture so that the video output image frame includes the content with the logo properly placed thereon for 2D processing and display.
  • a stereo logo comprising stereo spatially interleaved logo pictures, each stereo spatially interleaved logo picture including a representation of the logo, wherein the stereo spatially interleaved logo pictures are arranged in the spatially interleaved format.
  • the video image is processed for logo insertion, it is subjected to detection for the presence of pictures in the video image, wherein the stereo spatially interleaved pictures for the video image are arranged in a spatially interleaved format.
  • the stereo logo is generated, it is combined with the video image to generate the overlaid image in the spatially interleaved format.
  • the overlaid image is suitable for storage, display, or distribution.
  • a method for inserting a logo into a video image to generate an overlaid image includes detecting presence of stereo spatially interleaved pictures in the video image, the stereo spatially interleaved pictures for the video image being arranged in a spatially interleaved format, generating a stereo logo comprising stereo spatially interleaved logo pictures including a representation of the logo, the stereo spatially interleaved logo pictures arranged in the spatially interleaved format and combining the stereo logo and the video image to generate the overlaid image in the spatially interleaved format.
  • the method can further include analyzing the video image to determine the spatially interleaved format by detecting at least one seam in said video image where the at least one seam can include a horizontal seam and where the spatially interleaved format includes one of a top-bottom format, an interlaced format, and a checkerboard format and further can include where the at least one seam includes a vertical seam and where the spatially interleaved format includes one of a side-by-side format, an interlaced format, and a checkerboard format.
  • FIG. 1 depicts an exemplary set of input and output images for prior art (non-stereo) logo insertion
  • FIG. 2 depicts a set of stereo views combined into a single stereo (3D) image frame
  • FIG. 3 depicts the logo insertion processing of a stereo image frame with a conventional logo and the subsequent extraction of the two stereo views including the logo in accordance with conventional logo insertion practices;
  • FIG. 4 depicts the logo insertion processing of a stereo image frame with a stereo logo and the subsequent extraction of the two stereo views including the logo in accordance with an embodiment of the present invention
  • FIG. 5 depicts a plurality of exemplary simplified stereo (3D) image formats and the extraction of two image views in accordance with an embodiment of the present invention.
  • FIG. 6 depicts a flow diagram of a method for inserting a logo into a video image to generate an overlaid image in accordance with an embodiment of the present invention.
  • the present invention advantageously provides a system and method for stereo logo insertion.
  • the present invention is described primarily within the context of a video processor and display environment, the specific embodiments of the present invention should not be treated as limiting the scope of the invention. It will be appreciated by those skilled in the art and informed by the teachings of the present invention that the concepts of the present invention can be advantageously applied in substantially any video-based processing environment such as, but not limited to, television, transcoders, video players, image viewers, set-top-box or any software-based and/or hardware-based implementations useful for combining text with 3D content.
  • processor or “controller” should not be construed to refer exclusively to hardware capable of executing software, and can implicitly include, without limitation, digital signal processor (“DSP”) hardware, read-only memory (“ROM”) for storing software, random access memory (“RAM”), and non-volatile storage.
  • DSP digital signal processor
  • ROM read-only memory
  • RAM random access memory
  • any switches shown in the figures are conceptual only. Their function may be carried out through the operation of program logic, through dedicated logic, through the interaction of program control and dedicated logic, or even manually, the particular technique being selectable by the implementer as more specifically understood from the context.
  • FIG. 1 depicts an exemplary set of input and output images for prior art (non-stereo) logo insertion. That is, Figure 1 illustrates the operation of a conventional logo inserter commercially available today, in which an exemplary triangular logo (Figure 1 (b)) is added to the lower right corner of a source content picture ( Figure 1 (a)) to form an overlaid picture ( Figure 1 (c)).
  • the logo is included in a logo frame with the logo placed is the same position in which it is to appear in the overlaid picture.
  • the logo frame may be supplied to the logo inserter or composed within the logo inserter using the logo and other associated information. Since the source content picture and the logo are standard two-dimensional (2D) pictures, there is only a single view presented therein in contrast to stereo content in which two images or views would normally be presented in the source content picture.
  • Stereo 3D displays commonly support input formats where two views of a stereo picture are combined into a single combined picture.
  • the two views usually represent left and right images or views, which are formed by dividing the spatial area of the single content picture or frame between the left and right views.
  • Pictures formed in this manner are referred to as spatially interleaved pictures.
  • a description and analysis of the different representations of spatially interleaved pictures can be found in a paper entitled "On Spatially Interleaved Pictures SEI Message" by D. Tian et al.
  • a spatially-interleaved picture can be encoded using normal 2D picture and video coding standards, such as JPEG, MPEG-2, and MPEG-4 AVC.
  • the spatially interleaved picture can then be decomposed into two views, left and right, so that it can be displayed for presentation and viewing in stereo or 3D.
  • one of the stereo images or stereo views of a 3D image frame is depicted in light shading, while the second image or view associated with that 3D image frame is depicted in dark shading.
  • 3D contents include a pair of images or views initially generated as separate stereo images (or views). Each of these images can be encoded, wherein the encoding can include a down-sampling of each stereo image so that the combination of the two images fits within a normal stereo content frame size.
  • the contents of the two stereo images such as the left image and the right image, are combined into a single image frame.
  • each 3D source frame represents the entire 3D image instead of using two separate stereo images, each in their own frame or file.
  • Figure 5 depicts a variety of different 3D formats across the top row.
  • the formats shown include an interlaced format, a top-bottom (also known as over-under) format, a side-by-side format, and a checkerboard pattern format.
  • the interlaced format shown is for horizontal interlacing.
  • the orthogonal format to horizontal interlacing namely, vertical interlacing, can be achieved by interlacing alternating columns from each image or view instead of the alternating rows.
  • the formats shown in this figure represent an exemplary listing rather than an exhaustive listing of all known 3D formats.
  • one of the stereo images or stereo views (Si) of a 3D image is depicted in light shading, while the second image or view (S 2 ) associated with that 3D image is depicted in dark shading.
  • each image Si and S 2 is no more than half the resolution of the entire original 3D image because each image S is proportionately down-sampled in order to fit properly within the 3D stereo frame. Up-sampling by a complementary proportion permits restoration of each full size image S following extraction from the stereo 3D frame.
  • the original left and right view pictures i.e., Figures 2(b) and (c), respectively
  • Figures 2(b) and (c) are each down-sampled horizontally. This results in each view having half the horizontal resolution of the respective original view.
  • the two down-sampled pictures are then placed side-by-side into a spatially interleaved picture, namely, the 3D image frame, which has the same resolution (i.e., number of pixels) as either one of the original left and right view pictures.
  • the spatially interleaved picture is decomposed into two separate left and right view pictures based upon the knowledge that the views are formatted side-by-side, and each of the left and right sub-pictures are up-sampled back to their original resolution.
  • a similar process correspondingly adjusted for each format can be used for other spatially interleaved formats.
  • Figure 3 depicts the logo insertion processing of a stereo image frame with a conventional logo and the subsequent extraction of the two stereo views including the logo in accordance with conventional logo insertion practices.
  • the logo as added to the right view will be distorted in width but not in height.
  • This problem occurs because the conventional logo inserter simply combines a 2D logo with what is assumed to be a 2D content picture. Since the full size logo is overlaid actually on a down-sampled right view in the spatially interleaved picture of Figure 3(a). When the views are extracted for output and display and when each view is up-sampled to its full size, the logo is correspondingly increased in its width due to the up-sampling of the overlaid right view.
  • the stereo logo insertion technique of the present invention first detects the presence of stereo spatially interleaved pictures in the input video stream ( Figure 4(a)). More specifically, FIG. 4 depicts the logo insertion processing of a stereo image frame with a stereo logo and the subsequent extraction of the two stereo views including the logo in accordance with an embodiment of the present invention. In this way, the logo inserter can determine whether a stereo (3D) or non-stereo (e.g., 2D) picture frame is being input for logo insertion.
  • detection of spatially interleaved pictures can be performed in several different ways.
  • information such as meta-data or the like or information established with a system definition can be extracted and processed by a logo inserter.
  • This information can accompany the picture as part of the frame formatting.
  • the logo inserter can auto-detect the presence of spatially interleaved pictures by analyzing the input video picture frames in search of certain characteristics for such spatially interleaved pictures.
  • spatially interleaved pictures have edges that are seams that are detectable in certain parts of the spatially interleaved picture.
  • a vertical seam appears between the left image and the right image in the side-by-side format as shown in Figure 2(c).
  • Horizontal seams occur between the images in the top- bottom format as shown in Figure 5.
  • Combinations of horizontal and vertical seams occur in interlaced formatting of images shown in Figure 5.
  • edge detection can be used to detect these seams in the spatially interleaved picture.
  • a Sobel filter or the like can be used for such edge detection.
  • view correlation can be used to detect the spatial interleaving mode as a side-by- side, over-under, line-interleaved, or checkerboard pattern.
  • the views can be extracted according to the particular interleaving technique and the mean square error (MSE) between the two views can be computed.
  • MSE mean square error
  • a decision of the most likely interleaving technique can be made by selecting as the actual interleaving mode the technique that produced the lowest MSE.
  • This process can be refined to include a decision that the format is 2D by comparing the all the computed MSE's to a predetermined threshold and, if the threshold is exceeded by the MSE's for all the modes, then the content picture can be identified as 2D only.
  • the method disclosed uses a technique relying on image difference to distinguish a 3D image from a 2D image.
  • the method disclosed therein relies on feature correspondence to distinguish a 3D image from a 2D image.
  • Feature correspondence based methods detect features and establish a one-by-one correspondence between detected features.
  • image difference based methods do not rely on features for proper identification and operation.
  • the logo inserter detects that the input video contains stereo spatial interleaving
  • the logo is formatted into a spatially interleaved logo picture having a spatial interleaving format identical to the spatial interleaving format identified for the input video picture frames ( Figure 4(b)).
  • the logo is placed in each of the two views and then it is subjected to the appropriate amount of down-sampling.
  • the triangular logo picture would be down-sampled horizontally to achieve the proper side-by-side spatial interleaving.
  • the input video and spatially interleaved logo picture can be processed using a conventional logo insertion technique to create a spatially interleaved overlaid picture as shown in Figure 4. That is, the properly formatted logo picture in Figure 4(b) can be combined in the conventional manner with the spatially interleaved source picture in Figure 4(a) to generate the overlaid logo-inserted picture in Figure 4(c). From the figure, it is clear that the down-sampled logo appears in each down-sampled view. Of course, the appearance of the various pictures in Figures 4(a)-(c) would be correspondingly changed based on the actual spatial interleaving technique that is used and detected.
  • the logo will be accurately represented in the left and right stereo views.
  • the left and right views are extracted from the side-by-side formatting and up-sampled to the correct picture frame size (i.e., the same size as the original video frame in Figure 4(a)).
  • the left view in Figure 4(d) and the right view in Figure 4(e) are suitable for stereo display.
  • the logo is shown as being inserted in substantially the same position for each of the two images. It is contemplated that the logo position can be different in each of the two images in order to change the depth of the logo when it is viewed with the associated stereo content. Moreover, it is contemplated that the depth of the logo can be held at a predetermined constant value from one frame to the next or, in alternate embodiments of the present invention, can be varied according to a predetermined pattern of variation or according to the depth of the image over which the logo is being inserted, for example. In various embodiments of the present invention, transparency, size, color, motion, and other parameters of the logo can also be determined and/or varied over time or in accordance with properties of the image over which the logo is being inserted.
  • logo insertion has been describe as being performed substantially by a logo inserter device above, it is contemplated that logo insertion can be performed by many different devices, such as a set-top box or a DVD player or the like, prior to display of the stereo images.
  • FIG. 6 depicts a flow diagram of a method for inserting a logo into a video image to generate an overlaid image in accordance with an embodiment of the present invention.
  • the method 600 of Figure 6 begins at step 602 during which the presence of stereo spatially interleaved pictures in the video image is detected, the stereo spatially interleaved pictures for the video image being arranged in a spatially interleaved format.
  • the method 600 then proceeds to step 604.
  • a stereo logo including stereo spatially interleaved logo pictures, including a representation of the logo is generated, the stereo spatially interleaved logo pictures arranged in the spatially interleaved format.
  • the method 600 then proceeds to step 606.
  • the stereo logo and the video image are combined to generate the overlaid image in the spatially interleaved format.
  • the method 600 can then be exited.

Abstract

L'invention concerne un procédé permettant d'insérer un logo dans une image vidéo stéréophotographique afin de générer une image stéréophotographique superposée, le procédé consistant à : détecter la présence d'images stéréophotographiques dans l'image vidéo et, lorsque les images stéréophotographiques sont détectées, déterminer le format 3D desdites images stéréophotographiques, ledit format 3D étant un format stéréophotographique multiplexé spatialement ; générer un logo stéréophotographique comprenant des images de logos stéréophotographiques multiplexées spatialement incluant une représentation du logo, lesdites images de logos stéréophotographiques multiplexées spatialement étant configurées dans ledit format 3D ; et combiner le logo stéréophotographique à l'image vidéo pour générer l'image stéréophotographique superposée dans ledit format 3D.
PCT/US2010/000480 2010-02-19 2010-02-19 Insertion d'un logo stéréophtographique WO2011102818A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10709087.0A EP2537346B1 (fr) 2010-02-19 2010-02-19 Insertion de logo stereo
PCT/US2010/000480 WO2011102818A1 (fr) 2010-02-19 2010-02-19 Insertion d'un logo stéréophtographique
JP2012553856A JP5873813B2 (ja) 2010-02-19 2010-02-19 ステレオロゴ挿入
CN2010800662986A CN102860014A (zh) 2010-02-19 2010-02-19 立体徽标插入
US13/579,670 US9860513B2 (en) 2010-02-19 2010-02-19 Stereo logo insertion
KR1020127024354A KR20120131185A (ko) 2010-02-19 2010-02-19 입체 로고 삽입
US15/860,655 US10560681B2 (en) 2010-02-19 2018-01-02 Stereo logo insertion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2010/000480 WO2011102818A1 (fr) 2010-02-19 2010-02-19 Insertion d'un logo stéréophtographique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/579,670 A-371-Of-International US9860513B2 (en) 2010-02-19 2010-02-19 Stereo logo insertion
US15/860,655 Continuation US10560681B2 (en) 2010-02-19 2018-01-02 Stereo logo insertion

Publications (2)

Publication Number Publication Date
WO2011102818A1 true WO2011102818A1 (fr) 2011-08-25
WO2011102818A9 WO2011102818A9 (fr) 2013-01-17

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PCT/US2010/000480 WO2011102818A1 (fr) 2010-02-19 2010-02-19 Insertion d'un logo stéréophtographique

Country Status (6)

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US (2) US9860513B2 (fr)
EP (1) EP2537346B1 (fr)
JP (1) JP5873813B2 (fr)
KR (1) KR20120131185A (fr)
CN (1) CN102860014A (fr)
WO (1) WO2011102818A1 (fr)

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Also Published As

Publication number Publication date
JP5873813B2 (ja) 2016-03-01
JP2013520866A (ja) 2013-06-06
WO2011102818A9 (fr) 2013-01-17
US20180192021A1 (en) 2018-07-05
KR20120131185A (ko) 2012-12-04
US20120314029A1 (en) 2012-12-13
EP2537346A1 (fr) 2012-12-26
EP2537346B1 (fr) 2019-01-23
US9860513B2 (en) 2018-01-02
CN102860014A (zh) 2013-01-02
US10560681B2 (en) 2020-02-11

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